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7610108 |
Method and apparatus for attenuating error in dynamic and steady-state processes for prediction, control, and optimization
A method for providing independent static and dynamic models in a prediction, control and optimization environment utilizes an independent static model ( 20 ) and an independent dynamic model ( 22...
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7598688 |
Tilting device
A flat surface tilting device including a selectably positionable flat surface element assembly defining a flat surface element having a flat surface and a pivot location portion, the pivot...
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7571027 |
Kinematic singular point compensation systems and methods
Kinematic singular points in a process system are handled. In one embodiment, a numerically controlled (NC) processing system includes materials processing installation having a multi-axis...
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7560891 |
Position control apparatus
A deflection amount Ps representing a difference between a position detection value Pl of a driven body and a position detection value Pm of a motor is detected. A position calculator proportional...
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7551970 |
Positioning apparatus gravity compensation device and method for compensating gravitational forces
The present invention relates to a positioning apparatus. The positioning apparatus comprises at least one position sensor, at least one position controller and at least one position actuator,...
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7545113 |
Harmonic disturbance regulator
Presented is a harmonic regulator that regulates a plurality of individual harmonics in a system having periodic torque disturbances to commanded values, including zero. For each harmonic being...
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7541769 |
Electric power converter and motor driving system
An electric power converter which has improved accuracy in compensation of a dead time. A motor driving system employing the electric power converter is also provided. A power module includes a...
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7541766 |
System and method for the intelligent use of software deadband control in a control system
In accordance with one embodiment of the invention a control system for controlling performance of a device is provided. The control system includes a controller system and a deadband compensator...
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7528566 |
Method for controlling voltage of DC link for electric vehicle
Disclosed is a method for controlling a voltage of a DC link for an electric vehicle, which can reduce a capacitance of the DC link interposed between an inverter and a DC/DC converter. The method...
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7511444 |
Motor control apparatus for controlling motor to drive output shaft with positioning accuracy unaffected by backlash in rotation transmission system
A motor control apparatus controls a motor that drives an output shaft through a rotation transmission system. The difference between a newly established output shaft target rotation angle and a...
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7501784 |
Compensation method and apparatus for preventing damaging bearing currents in an electrical machine
In an apparatus to increase the service life of bearings in an electric machine, the bearing currents that act on the bearings of the rotor are reduced by the application of a corresponding...
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7498760 |
Drive control apparatus
A drive control apparatus including a feed-forward operation amount generation device, a feed-back operation amount generation device, a feed-forward correction amount generation device and a...
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7495403 |
Method, apparatus and article for vibration compensation in electric drivetrains
A torque current peak compensation value is subtracted from a torque current reference value, where the torque current peak compensation value is based at least in part on a determined peak of...
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7471056 |
Control device
A control device includes a first switch ( 400 ) by which an input signal to a motor speed control loop ( 910 ) is selected from a signal of a position control loop ( 300 ) and a signal of the...
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7468593 |
Digital system for motor bus transfer
In industrial complexes and power stations a main source of power is connected to a motor bus to which motors and other loads are connected. In such systems an auxiliary source of power is provided...
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7468588 |
Apparatus and method for controlling operation of reciprocating compressor
The present invention relates to an apparatus and method for controlling operation of a reciprocating compressor. The operating efficiency of the compressor can be improved by performing the steps...
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7459873 |
Method for extracting maximum gain of servo controller
It is an object of the present invention to provide a method for extracting a maximum gain of a servo controller in which while a machine is vibrated by raising a control gain, the vibration is...
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7453229 |
Apparatus and method for controlling operation of reciprocating compressor
An apparatus and method for controlling the operation of a reciprocating compressor are capable of preventing distortion of a current applied to the reciprocating compressor by generating a current...
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7453228 |
Method for controlling a positioning device, positioning device, and lithographic apparatus provided with a positioning device
In a method for controlling a positioning device, the positioning device has a stator and mover, the mover being movable relative to the stator; a position sensor configured to generate a position...
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7453223 |
Method for active compensation of oscillations in a machine which processes printing material, and a machine which processes printing material
For the active compensation of oscillations in a machine which processes printing material, a signal which contains an oscillation of the machine or of a part of the machine is measured and at...
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7429847 |
Motor control device
A controller performs processing for calculating a main torque control value, processing for outputting a final control torque value based on the main torque control value and a...
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7423403 |
Motor control system
A motor control system which can realize current detection with high accuracy by using an amplifier having an ordinary level of accuracy and can avoid deterioration of current detection accuracy...
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7418302 |
Floating deadband control
A method of controlling an input device is disclosed. A deadband is generated about a first position when the input device is at the first position. The input device is moved from the first...
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7405531 |
Torque-position transformer for task control of position controlled robots
Torque control capability is provided to a position controlled robot by calculating joint position inputs from transformation of the desired joint torques. This is based on calculating the transfer...
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7405529 |
System and method for controlling linear compressor
A system for controlling a linear compressor, generates freezing force as a piston reciprocates according to rotation of a motor which receives alternating current power through a triac. The system...
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7405525 |
Method for the control of an electric machine and/or device for the control thereof
The invention relates to a method for the control of an electric machine ( 5 ), wherein a control unit ( 1 ) comprises a parameterisable speed control ( 26 ) and a parameterisable additional...
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7372231 |
Movable body position control device and stage device using the movable body position control device
A movable body position control device includes a pair of position detectors configured to detect moving positions of both ends of a movable body; a pair of driving parts, the driving parts being...
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7365511 |
Methods to control high speed electric machines having a front-end EMI filter attached
A system and method for extracting estimated input voltage and input current values of an AC motor based on sensed power inverter output voltage and output current when the AC motor is connected to...
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7355364 |
Motor and controller inversion: commanding torque to position-controlled robots
Systems and methods are presented that cancel the dynamics of a motor and a joint controller in the presence of communication time delays, measurement noise, and controller parameter uncertainties...
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7352142 |
Apparatus and method for controlling stroke of reciprocating compressor
An apparatus for controlling an operation of a reciprocating compressor includes a voltage detecting unit for detecting a positive half-wave voltage of an AC voltage applied to a motor of the...
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7348752 |
Stage apparatus and lithographic apparatus
A stage apparatus and a lithographic apparatus comprising such a stage apparatus are described. The stage apparatus includes an electromagnetic motor arranged to displace an object table, an...
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7345448 |
Adaptive command filtering for servomechanism control systems
Preferred embodiments of the invention implement techniques for modifying the command trajectory, the architecture of a servomechanism control system, or both, to reduce the servo error during...
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7345443 |
Motor control apparatus
It is an object of the invention to provide a motor control apparatus capable of ensuring a control function even for a large inertia moment ratio. In a motor control apparatus including a...
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7345442 |
Device for controlling electric-motor power steering device
Distortions of motor voltage and current and a torque ripple of the motor are generated by dead band compensation for preventing an arm short circuit of an inverter, and a feeling of physical...
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7327103 |
Driver and method for control of voice coil motor in disk drive
A driver for a voice coil motor in a disk drive includes a sensor that provides a sense current by sensing a coil current in the voice coil motor, a comparator that provides an error current by...
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7319910 |
Method and device for controlling a movement of a movable machine element of a machine tool or production machine
A method and device for controlling a movement of a movable machine element of a machine tool or production machine with at least two drive axles are disclosed. At least one mechanical...
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7298111 |
Method and device for controlling a production unit
A method and a device for controlling a production unit in a production installation are specified, controlling referring to the controlling and monitoring of speeds of rotation or angles of...
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7279864 |
Control unit for driving a regulating transistor of a fan arrangement
A control unit for driving a regulating transistor ( 2 ) of a fan arrangement, in which the regulating transistor ( 2 ) is connected in series with an electronically commutated fan ( 1 ), having...
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7276877 |
Sensorless control method and apparatus for a motor drive system
A method and apparatus provide a state observer control system 600 for a motor 106 that uses an extended Kalman filter 330 to predict initial rotor position and afterwards accurately predict...
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7248014 |
Motor control system
A motor control system capable of securing stability and rapidity of motion even in a machine where the stability varies in accordance with a position of a driven member. The driven member and a...
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7245982 |
System and process for measuring, compensating and testing numerically controlled machine tool heads and/or tables
A system and a process are disclosed, that are automated and integrated with numerically controlled systems, for measuring, compensating and testing numerically controlled machine tool heads ( 1 )...
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7245102 |
Method and system of compensating wave reflections in transmission lines
A method and system of compensating wave reflections in transmission lines is provided. The system includes a compensator that transforms a transmission line (which connects an actuator and a...
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7239104 |
Position-dependent friction compensation for steering systems
A method is for compensating for a rotor angle deviation of a motor, which may be used as an actuator, e.g., as a servo actuator, in a steering system. The rotor angle deviation is compensated for...
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7224141 |
Position controller of motor
A position controller of a motor in which the position time can be shortened even if an external force is applied. A speed control unit ( 13 ) comprises a compensation low-pass filter ( 133 )...
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7211981 |
Electric motor movement controlling method, an electric motor movement controlling system and a compressor
The present invention provides an electric motor movement controlling method, where the electric motor is fed by a total voltage proportional to the network voltage. The method comprises steps of...
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7208903 |
Control device for alternating-current motor
In one coordinate system of arbitrary rectangular coordinate systems including a coordinate system in which the position of a stator is fixed, a coordinate system in which the position of a rotor...
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7208902 |
Digital speed controlling apparatus, digital motor controlling apparatus, paper conveying apparatus, digital speed control method, program for making computer execute this method, computer-readable recording medium, and imaging forming apparatus
A digital speed controlling apparatus includes: a target speed calculator that calculates a target speed of a driven conveyor belt, based on a sampling time; a current speed calculator that...
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7208901 |
Control method for jerk-limited speed control of a movable machine element of a numerically controlled industrial processing machine
A control method for controlling a speed of a movable machine element of a numerically controlled industrial processing machine with jerk limitation is described. The processing machine can be, for...
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7199548 |
Drive control apparatus and method of alternating current motor
A drive control apparatus, which controls an AC motor subjected to rotational drive by applying a rectangular wave voltage thereto, comprising: an actual torque detection section for detecting an...
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7187154 |
Motor drive apparatus and electric power steering apparatus
The present invention provides a motor drive apparatus capable of calculating an angular velocity and a rotation angle accurately in the entire rotation velocity range of a motor using a cheap Hall...
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